A uniform bar has mass 0.0120 kg and is 30.0 cm long. It pivots without friction about
Question:
(a) What must be the current I in the bar for the bar to be in rotational equilibrium when it is at an angle θ = 30.0° above the horizontal? Use your result from Problem 27.70.
(b) For the bar to be in rotational equilibrium, should I be in the direction from a to b or b to a?
Figure P27.72
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Related Book For
University Physics with Modern Physics
ISBN: 978-0133977981
14th edition
Authors: Hugh D. Young, Roger A. Freedman
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